Brainiac is always a collector of info. Personally I don't get the jumping to conclusions that Brainiac would be the enemy in ANY JL film. I can tell the ball park age of most getting on this band wagon because it appeals to people whose first exposure to JL was the animated series or various recent video games, but Brainiac is far better suited to be a big bad in a solo Superman film, seeing as he's arguably Superman's number two enemy. Sorry... This Brainy is appearing in JL sounds like a rumor started by fans that are teens/early twenties FOR fans that are teens/early twenties.
What the hell kinda logic is this...
yeah and Lex Luthor would be arguably better suited to a Superman solo movie because he's Superman's number 1 villain. Does that make him wrong for BvS? NO
Brainiac being used as the JL villain instead of as the Superman solo villain works.
I could be perceiving this incorrectly, but the way you're acting actually comes across as more immature than mature. Acting like your ideas are somehow better because you're older and familiar with more older material than younger fans is pretentious.
Your argument also doesn't make sense.
That demographic that you're subtly insulting is also very familiar with STAS which prominently featured Brainiac against Superman in a solo setting in multiple well received episodes.
That demographic would be just as likely to suggest a solo Superman movie with Brainiac as they would a JL movie with Brainiac.
Brainiac and Darkseid just make sense as the JL villains. No other villains have the same balance of threat level and popularity that Brainiac and Darkseid do.
I REALLY hope that Brainiac is the villain of JL1 and Darkseid should be the villain of JL2.
A Superman solo with Brainiac as the villain would be great too, who says we can't see two movies with Brainiac. Maybe Brainiac could return in a different form after being almost completely destroyed in the JL film. Luthoriac? Lexiac? I could see it happening and I wouldn't mind that for the second solo.
There are other options for another Superman solo, the dude has one of the best rogues galleries ever